• KOL
    • Cortical Dysplasia
    • Akira Yagishita
    • Akira Yagishita: Influence Statistics

      Akira Yagishita

      Akira Yagishita

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      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan. | Tokyo Metropolitan Neurological Hospital Department of Neuroradiology Tokyo Japan | ...

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      Akira Yagishita:Expert Impact

      Concepts for whichAkira Yagishitahas direct influence:Cortical dysplasia,Seizure foci,Cortical dysgenesis,Localized megalencephaly,Tuberous sclerosis,Cervical spine,Intractable epilepsy,Temporal lobe.

      Akira Yagishita:KOL impact

      Concepts related to the work of other authors for whichfor which Akira Yagishita has influence:Magnetic resonance,Progressive supranuclear,Amyotrophic lateral sclerosis,White matter,Differential diagnosis,Temporal lobe,Cortical development.

      KOL Resume for Akira Yagishita

      Year
      2015

      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan.

      2014

      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, 2-6-1 Musashidai, Fuchu, Tokyo 183-0042, Japan

      2012

      Department of Neurology, Tokyo Metropolitan Neurological Hospital, Japan

      2009

      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Kokubunji, Tokyo, Japan

      2008

      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Fucyu, Tokyo, Japan

      2007

      Neuroradiology and

      2006

      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, 2-6-1 Musashidai, 183-0042, Fuchu, Tokyo, Japan

      2005

      From the Departments of Radiology (Drs. Oba, Kutomi, Yamauchi, Furui, Sakai, Takada, Harasawa, Takeshita, Kohtake, Tanaka, and Suzuki) and Neurology (Drs. Shimizu, Matsumura, and Sonoo), Teikyo University School of Medicine, Tokyo, Japan; Department of Neuroradiology (Dr. Yagishita), Tokyo Metropolitan Neurological Hospital, Tokyo, Japan; Second Department of Radiology (Dr. Terada), Toho University School of Medicine, Tokyo, Japan; Department of Radiology (Dr. Barkovich), University of California San Francisco, San Francisco CA; Department of Neurology (Dr. Uchigata), Showa General Hospital, Tokyo, Japan.

      2002

      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan, Japan

      2001

      the Departments of Neuroradiology, Tokyo Metropolitan Neurological Hospital

      2000

      Tokyo Metropolitan Neurological Hospital, Departments of Neuroradiology, Fuchu, Tokyo, Japan

      1999

      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Tokyo and,

      1998

      Department of Pathology and Neuropathology, Tokyo Metropolitan Neurological Hospital, 2-6-1, Musashidai, 183-0042, Fuchu-city, Tokyo, Japan

      1997

      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Japan

      1996

      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, 2-6-1 Musashidai, 183, Fuchu, Tokyo, Japan

      1995

      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan

      1994

      *Departments of Radiology and Nuclear Medicine, Psychiatry †Neurosurgery ‡National Center Hospital for Mental, Nervous, and Muscular Disorders, National Center of Neurology and Psychiatry, and the Department of Neuroradiology § Tokyo Metropolitan Neurological Hospital, Tokyo, Japan

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      Sample of concepts for which Akira Yagishita is among the top experts in the world.
      Concept World rank
      ganglioglioma epileptogenicity #2
      atrophy cerebral peduncle #2
      cbds atrophy #2
      mass effects tumors #2
      seizure foci ganglioglioma #2
      t1wi mass effects #2
      matter rolandic #2
      clinically diagnosed cbds #2
      epileptogenicity tumors #2
      confirmed ganglioglioma #2
      contralateral ganglioglioma #2
      tle seizure foci #2
      tle characteristic imaging #2
      introductionganglioglioma #2
      conclusioncbds #2
      gangliogliomas characteristic #2
      medullaris preoperative #3
      symmetric temporal abnormalities #3
      cases epileptogenicity #3
      ieeg intraoperative #3
      overlying cortical mantle #3
      alsd cst #3
      thalamotegmental involvement #3
      waatl #3
      fact conus #3
      images waatl #3
      alsd myelin #3
      temporal lobes t2wi #3
      images focal lesions #3
      ecg focal lesion #3
      lobes t2wi #3
      tle waatl #3
      symptoms radiculomeningeal #3
      alsd t2wi #3
      waatl focal #3
      seizure foci seeg #3
      bilateral thalamotegmental #3
      examined frontotemporal #3
      cst alsd #3
      encephalopathy thalami #3
      ecg waatl #3
      radiculomeningeal avms #3
      waatl magnetic resonance #3
      findings radiculomeningeal #3
      waatl seizure foci #3
      lesions waatl #3
      spinal radiculomeningeal avms #3
      tle 47 patients #3
      swelling spinal cord #3
      47 patients images #3
      Sign-in to see all concepts, it's free!

      Prominent publications by Akira Yagishita

      KOL-Index: 15657

      OBJECTIVE: To evaluate the area of the midbrain and pons on mid-sagittal MRI in patients with progressive supranuclear palsy (PSP), Parkinson disease (PD), and multiple-system atrophy of the Parkinson type (MSA-P), compare these appearances and values with those of normal control subjects, and establish diagnostic MRI criteria for the diagnosis of PSP.

      METHODS: The authors prospectively studied MRI of 21 patients with PSP, 23 patients with PD, 25 patients with MSA-P, and 31 age-matched ...

      Known for Patients Psp | Supranuclear Palsy | Midbrain Area | Mri Diagnosis | Overlap Values
      KOL-Index: 8994

      BACKGROUND: Cervical flexion myelopathy is quite a rare condition affecting mainly adolescent males who present with muscular atrophy of the upper extremities. Its etiology is still unknown, as is the cause of its marked male preponderance. Disproportion of the cervical spine and spinal cord is suspected to be one of the etiological causes, however, this has yet to be confirmed.

      METHODS: We performed a comparative study of the cervical magnetic resonance (MR) images of six male patients ...

      Known for Spinal Cord | Cervical Spine | Flexion Myelopathy | Muscular Atrophy | Neutral Position
      KOL-Index: 7974

      IntroductionWhite matter abnormalities in the anterior temporal lobe (WAATL) are sometimes observed on magnetic resonance (MR) images of patients with temporal lobe epilepsy (TLE). Our purpose was to determine whether WAATL could indicate if the seizure foci are ipsilateral on electroencephalograms (EEG) in TLE patients.MethodsWe reviewed 112 consecutive patients with medically intractable TLE. We compared the side of seizure foci on EEG (preoperative and intraoperative) and MR ...

      Known for Temporal Lobe | Seizure Foci | White Matter | Images Patients | Magnetic Resonance
      KOL-Index: 7912

      To develop non-invasive regional cerebral blood flow (rCBF) measurements using technetium-99m ethyl cysteinate dimer (99mTc-ECD) and single-photon emission tomography (SPET), the same graphical analysis as was described in our previous reports using technetium-99m hexamethylpropylene amine oxime (99mTc-HMPAO) was applied to time-activity data for the aortic arch and brain hemispheres after intravenous injection of99mTc-ECD. Hemispherical brain perfusion indices (BPI) for99mTc-ECD showed ...

      Known for Ethyl Cysteinate | Rcbf Values | Amine Oxime | Exametazime Tomography | Ecd Spet
      KOL-Index: 7695

      Our purpose was to investigate brain atrophy and signal intensity changes on MRI in patients with progressive supranuclear palsy (PSP) and to correlate them with pathological features. We reviewed MRI and brain specimens of six patients with PSP, nine with Parkinson's disease (PD) and six with striatonigral degeneration (SND). Sagittal T1-weighted images showed that four patients with PSP had obvious reduction of anteroposterior midbrain diameter. T2-weighted images demonstrated diffuse ...

      Known for Progressive Supranuclear | Patients Psp | Signal Intensity | T2weighted Images | Brain Atrophy
      KOL-Index: 7068

      BACKGROUND AND PURPOSE: In hemimegalencephaly, MR imaging often reveals midsagittal bandlike structures between the 2 lateral ventricles. To determine whether these structures are aberrant midsagittal fibers, we retrospectively reviewed them on conventional MR imaging and prospectively examined them by diffusion tensor MR and fiber tract (FT) reconstruction imaging.

      MATERIALS AND METHODS: We retrospectively reviewed conventional MR images of 26 consecutive patients with ...

      Known for Patients Hemimegalencephaly | Diffusion Tensor Imaging | Aberrant Midsagittal Fibers | Fiber Tracts | Corpus Callosum
      KOL-Index: 6613

      The present paper concerns serial examinations of computed tomography (CT) and magnetic resonance imaging (MRI) in 22 patients with sporadic amyotrophic lateral sclerosis (ALS). Supranuclear ophthalmoplegia developed in 13 and dementia in 3 patients. The investigations showed gradually progressive atrophy, first in the frontal and anterior temporal lobes then in the precentral gyrus, and later in the postcentral gyrus, anterior part of the cingulate gyrus, corpus callosum and brain stem ...

      Known for Lateral Sclerosis | Resonance Imaging | Temporal Lobe | Computed Tomography | Supranuclear Ophthalmoplegia
      KOL-Index: 6390

      Abstract There is immense variability in the clinical presentation of tuberous sclerosis and many incomplete forms (formes frustes) exist. To investigate the imaging characteristics of cortical tubers seen in tuberous sclerosis unaccompanied by other stigmata, we reviewed MRI and CT of six patients who met the criteria for a definitive diagnosis of TS, established solely by the presence of a histologically confirmed cortical tuber. Five of the patients had a solitary cortical tuber and ...

      Known for Tuberous Sclerosis | Cortical Tubers | White Matter | Adolescent Brain | Imaging Male
      KOL-Index: 6329

      BACKGROUND AND PURPOSE: Hemimegalencephaly is a rare but well-known congenital malformation with ipsilateral enlargement of the hemicerebrum. However, very little is known about changes in structures outside the involved hemisphere in patients with this condition. We investigated morphologic abnormalities occurring outside the affected hemisphere by MR imaging in a large series of patients with hemimegalencephaly.

      MATERIALS AND METHODS: MR imaging findings for 30 patients with ...

      Known for Patients Hemimegalencephaly | Cranial Nerves | Cerebral Hemisphere | Brain Stem | Imaging Findings
      KOL-Index: 6259

      A variety of central nervous system (CNS) diseases are associated with abnormal hyperintensity within the subarachnoid space (SAS) by fluid-attenuated inversion-recovery (FLAIR) MR imaging. Careful attention to the SAS can provide additional useful information that may not be available with conventional MR sequences. The purpose of this article is to provide a pictorial essay about CNS diseases and FLAIR images with abnormal hyperintensity within the SAS. We present several CNS diseases ...

      Known for Subarachnoid Space | Central Nervous | Flair Images | Abnormal Hyperintensity | Attenuated Inversion
      KOL-Index: 5908

      IntroductionGanglioglioma is an uncommon neoplasm of the central nervous system, most frequently seen in the temporal lobe, and usually associated with medically refractory epilepsy in children and young adults. Few reports have considered ganglioglioma-associated epileptogenicity arising in the temporal lobe. The purpose of our study was to define the imaging features of ganglioglioma in the temporal lobe and their relation to the seizure foci revealed by electrocorticograms.Materials ...

      Known for Temporal Lobe | Central Nervous | 24 Patients | Medically Refractory Epilepsy | T1weighted Images
      KOL-Index: 5191

      IntroductionHemimegalencephaly is a well-known congenital malformation. However, localized megalencephaly, which may be one of the subtypes of hemimegalencephaly, has not been separately investigated. In the present study, we attempted to characterize the clinical and magnetic resonance (MR) imaging features of localized megalencephaly in comparison with ordinary diffuse hemimegalencephaly and multilobar cortical dysplasia.MethodsMR findings for 43 patients with hemimegalencephaly and ...

      Known for Localized Megalencephaly | Cortical Dysplasia | Extracerebral Abnormalities | Imaging Findings | Brain Child

      Key People For Cortical Dysplasia

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      Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan. | Tokyo Metropolitan Neurological Hospital Department of Neuroradiology Tokyo Japan | Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, 2-6-1

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